PILLAR 2 - Autonomous maintenance(Jishu Hozen) :

This pillar is geared towards developing operators to be able to take care of small maintenance tasks, thus freeing up the skilled maintenance people to spend time on more value added activity and technical repairs. The operators are responsible for upkeep of their equipment to prevent it from deteriorating.
Policy :1. Uninterrupted operation of equipments.
2. Flexible operators to operate and maintain other equipments.
3. Eliminating the defects at source through active employee participation.
4. Stepwise implementation of JH activities.
JISHU HOZEN Targets:1. Prevent the occurrence of 1A / 1B because of JH.
2. Reduce oil consumption by 50%
3. Reduce process time by 50%
4. Increase use of JH by 50%
Steps in JISHU HOZEN :1. Preparation of employees.
2. Initial cleanup of machines.
3. Take counter measures
4. Fix tentative JH standards
5. General inspection
6. Autonomous inspection
7. Standardization and
8. Autonomous management.
Each of the above mentioned steps is discussed in detail below.
1. Train the Employees : Educate the employees about TPM, Its advantages, JH advantages and Steps in JH. Educate the employees about abnormalities in equipments.
2. Initial cleanup of machines :
o Supervisor and technician should discuss and set a date for implementing step1
o Arrange all items needed for cleaning
o On the arranged date, employees should clean the equipment completely with the help of maintenance department.
o Dust, stains, oils and grease has to be removed.
o Following are the things that has to be taken care while cleaning. They are Oil leakage, loose wires, unfastened nits and bolts and worn out parts.
o After clean up problems are categorized and suitably tagged. White tags is place where problems can be solved by operators. Pink tag is placed where the aid of maintenance department is needed.
o Contents of tag is transferred to a register.
o Make note of area which were inaccessible.
o Finally close the open parts of the machine and run the machine.
3. Counter Measures :
o Inaccessible regions had to be reached easily. E.g. If there are many screw to open a fly wheel door, hinge door can be used. Instead of opening a door for inspecting the machine, acrylic sheets can be used.
o To prevent work out of machine parts necessary action must be taken.
o Machine parts should be modified to prevent accumulation of dirt and dust.
4. Tentative Standard :
o JH schedule has to be made and followed strictly.
o Schedule should be made regarding cleaning, inspection and lubrication and it also should include details like when, what and how.
5. General Inspection :
o The employees are trained in disciplines like Pneumatics, electrical, hydraulics, lubricant and coolant, drives, bolts, nuts and Safety.
o This is necessary to improve the technical skills of employees and to use inspection manuals correctly.
o After acquiring this new knowledge the employees should share this with others.
o By acquiring this new technical knowledge, the operators are now well aware of machine parts.
6. Autonomous Inspection :
o New methods of cleaning and lubricating are used.
o Each employee prepares his own autonomous chart / schedule in consultation with supervisor.
o Parts which have never given any problem or part which don't need any inspection are removed from list permanently based on experience.
o Including good quality machine parts. This avoid defects due to poor JH.
o Inspection that is made in preventive maintenance is included in JH.
o The frequency of cleanup and inspection is reduced based on experience.
7. Standardization :
o Upto the previous stem only the machinery / equipment was the concentration. However in this step the surroundings of machinery are organized. Necessary items should be organized, such that there is no searching and searching time is reduced.
o Work environment is modified such that there is no difficulty in getting any item.
o Everybody should follow the work instructions strictly.
o Necessary spares for equipments is planned and procured.
8. Autonomous Management :
o OEE and OPE and other TPM targets must be achieved by continuous improve through Kaizen.
o PDCA ( Plan, Do, Check and Act ) cycle must be implemented for Kaizen.